2uzfe Ecu Pinout [HD]

Total pins: 68. Some hybrid models (like the 4Runner) use a 4th smaller connector for chassis integration.

While this article provides the critical path, a full 70-page ECU pinout includes pins for: 2uzfe ecu pinout

On standard early 2UZ-FE ECUs, the connectors are labeled sequentially (often A, B, C, D, E or E3, E4, E5, E6, E7 depending on the factory manual). Below is a reference map for the most critical pins used during custom wiring projects. Pin Acronym Function Description Typical Wire Color (Early Models) EFI Relay 12V Power Black-Yellow BATT Constant 12V Battery White-Blue IGSW Ignition Switch 12V Black-Orange FC Fuel Pump Relay Control W Check Engine Light (MIL) SIL OBD2 Diagnostic Data TACH Tachometer RPM Output E1 Main Chassis Ground 4. Bypassing the Engine Immobilizer (The Swap Hurdle) Total pins: 68